13 — Illustrated Guide: How Your Brain Solves Problems

A break from blogging has been required for work on the second edition of Calculations In Chemistry – An Introduction. We will be back to blogging when the chapter deadlines have finally passed. Meanwhile, at the link below is posted a presentation that might be titled:

A question from the slides: For 80,000 Virginia 9th-grade students each year taking the Stanford 9 standardized test, as shown in the graph below, scores in math reasoning went way up. Why did skills in solvingcalculations go way down?